UPSKILL MATH PLUS

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In a city, the weekly observations made in a study on the cost of living index are given in the following table:
 
Cost of living index Number of weeks
140-150 5
150-160 10
160-170 20
170-180 9
180-190 6
190-200 2
Total 52
 
Draw a frequency polygon for the data above (without constructing a histogram)
 
Important!
This is a self assessment task. Solve this question and assess the solution steps after the completion of test on your own.